Chromium (hexavalent)

Sun Prairie Utilities

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	0.695 ppb	12	12	0.246 ppb - 1.03 ppb
2014	0.724 ppb	13	13	0.234 ppb - 1.01 ppb
2015	N/A	0	0	N/A
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	N/A	0	0	N/A
2019	N/A	0	0	N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date	Lab ID	Result
2013-10-31	756110-10193	0.725 ppb
2013-11-07	757676-10245	0.780 ppb
2013-11-07	757662-10245	0.246 ppb
2013-11-07	757664-10245	0.633 ppb
2013-11-07	757674-10245	0.975 ppb
2013-11-07	757684-10245	0.848 ppb
2013-11-07	757672-10245	0.670 ppb
2013-11-07	757668-10245	0.592 ppb
2013-11-07	757682-10245	0.250 ppb
2013-11-07	757680-10245	0.791 ppb
2013-11-07	757692-10245	0.800 ppb
2013-11-07	757678-10245	1.03 ppb
2014-05-06	784667-11316	0.632 ppb
2014-05-06	784675-11316	0.861 ppb
2014-05-06	784671-11316	0.777 ppb
2014-05-06	784669-11316	0.970 ppb
2014-05-06	784659-11316	1.01 ppb
2014-05-06	784663-11316	0.714 ppb
2014-05-06	784683-11316	0.258 ppb
2014-05-06	784677-11316	0.850 ppb
2014-05-06	784681-11316	0.950 ppb
2014-05-06	784673-11316	0.523 ppb
2014-05-06	784679-11316	0.963 ppb
2014-05-06	784665-11316	0.234 ppb
2014-05-06	784661-11316	0.677 ppb